Primary Knowledge 09
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Definition 5 A cycloid(Â\½u)(see figure 4) is the curve traced by a point P on the circumference of a circle of radius a rolling along a straight line in a plane.
Figure 5 Cycloid |
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Definition 6 A hypocycloid(¶ê¤ºÂ\½u) is the curve traced by a point P on the circumference of a circle of radius a rolling round the inside of a fixed circle. |
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